100*99/2 = 4950
There are 91 lines.
there are 6 lines can pass through 4 noncollinear points.
There are 20 common points.
points : infinite lines : 4 vertices : 4
the parallel lines never intercept so they do not have any common points.
100*99/2 = 4950
There are 91 lines.
there are 6 lines can pass through 4 noncollinear points.
There are 20 common points.
3 points
points : infinite lines : 4 vertices : 4
If the two lines are actually "on top of each other", they can have infinitely many points in common. If they are parallel, they have no points in common. If they are perpendicular, they have one point in common.
If no pair of lines is parallel and if each pairwise intersection is distinct, there will be 10 points of intersection.
If no pair of lines is parallel and if each pairwise intersection is distinct, there will be 6 points of intersection.
you have to make four or five horizontal lines in order to get 100 points.
4 points of intersection, meaning 4 lines